There are 2 US Post Offices in Jerauld County serving a total of 2,107 residents equating to 1,054 residents per post office. It's estimated that approximately 3,363 packages are handled across the 2 county post offices annually. Jerauld County is a county located in the U.S. state of South Dakota. As of the 2010 census, the population was 2,071. Its county seat is Wessington Springs.